/** @file
  Set the host name

  Copyright (c) 2011-2012, Intel Corporation. All rights reserved.
  SPDX-License-Identifier: BSD-2-Clause-Patent

**/

#include <errno.h>
#include <string.h>
#include <Uefi.h>
#include <unistd.h>

#include <Library/DebugLib.h>
#include <Library/UefiLib.h>

#include <sys/socket.h>

char mBuffer[65536];


/**
  Set the host name

  @param [in] Argc  The number of arguments
  @param [in] Argv  The argument value array

  @retval  0        The application exited normally.
  @retval  Other    An error occurred.
**/
int
main (
  IN int Argc,
  IN char **Argv
  )
{
  int AppStatus;

  DEBUG (( DEBUG_INFO,
            "%a starting\r\n",
            Argv[0]));

  //
  //  Determine if the host name is specified
  //
  AppStatus = 0;
  if ( 1 < Argc ) {
    //
    //  Set the host name
    //
    AppStatus = sethostname ( Argv[1], strlen ( Argv[1]));
    if ( -1 == AppStatus ) {
      switch ( errno ) {
      default:
        Print ( L"ERROR - errno: %d\r\n", errno );
        break;

      case ENODEV:
        Print ( L"WARNING - Platform does not support permanent storage!\r\n" );
        break;

      case ENOMEM:
        Print ( L"ERROR - Insufficient storage to save host name!\r\n" );
        break;

      case ENOTSUP:
        Print ( L"ERROR - Platform does not support environment variable storage!\r\n" );
        break;
      }
    }
  }
  else {
    //
    //  Display the current host name
    //
    AppStatus = gethostname ( &mBuffer[0], sizeof ( mBuffer ));
    if ( -1 == AppStatus ) {
      Print ( L"ERROR - Unable to get host name, errno: %d\r\n", errno );
    }
    else {
      if ( 0 == mBuffer[0]) {
        Print ( L"Host name is not set!\r\n" );
      }
      else {
        Print ( L"Host name: %a", &mBuffer[0]);
      }
    }
  }

  //
  //  All done
  //
  return errno;
}
